Juniper ACX7100-32C Hardware Manual page 97

CAUTION: Verify that the direction of the arrow on the PSM handle matches the
direction of airflow in the chassis. Ensure that each PSM you install in the chassis has
the same airflow direction. If you install PSMs with two different airflow directions,
Junos OS raises an alarm, and the status (ALM) LED blinks amber.
3. Using both hands, place the PSM in the power supply slot on the rear panel of the router and slide it
in until it is fully seated and the ejector lever slides into place.
4. Press the latch located on the side of the PSM to slide it into the chassis.
5. Attach the power cord to the PSM.
6. Attach the power cord to the AC power source, and switch on the dedicated customer-site 2-pole
circuit breaker. Follow the instructions for your site.
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